The one you held onto until something worthy showed up
The perspective of the cards illustration is beautiful, with your eye drawn down the yellow road right up to the church that Emrakul is toppling, providing the perfect spot to place all the text that she comes with
(If it would be dealt damage or destroyed, remove a shield counter from it instead.) * Proliferate
Though they get to choose which of their cards to give up, Antimagic Cone can still have a significant impact on the game particularly if your opponents don't have many enchantments to choose from
As a result, it's only targeting one opponent, and Zevlor will copy the spell and give you both effects for each opponent you currently have
Strategically, you just want to play all the best creatures you can to gum up the board until you can safely overwhelm the opponent